Plank To Tap Challenge

You start with a standard plank, building tension through your core and shoulders for 30 seconds. Then you shift to shoulder taps, and suddenly that stable base has to work twice as hard – every time a hand lifts, your obliques and hips have to fight the urge to rotate. It's the same position with a completely different demand.

Anti-rotation work like shoulder taps has been shown to improve functional core stability more effectively than traditional crunches – training your body to resist movement is often more useful than creating it.